#include <stdio.h>
 
int main(void) {
    int n;
    scanf("%d", &n);
 
    for (int i = 0; i < n; i++) {
        int people, count[100001]={0}, count1[100001]={0}, a, result = -1;
 
        scanf("%d", &people);
        for (int p = 0; p < people; p++) {
            scanf("%d", &a);
            count[a]+=1;
            if (count[a] > people / 2) {
                result = a;
            }
        }
 
        printf((result >= 0) ? "%d\n" : "SYJKGW\n", result);
    }
 
    return 0;
}
 

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NCAKMTAgMSAyIDMgMSAyIDMgMSAyIDMgMQo1IDEgMSAxIDIgMgo2IDEwIDEwIDIgMTAgMTAgMgo2IDEgMSAxIDIgMiAyIA==

4 
10 1 2 3 1 2 3 1 2 3 1
5 1 1 1 2 2
6 10 10 2 10 10 2
6 1 1 1 2 2 2